diff --git a/dmlab2d/BUILD b/dmlab2d/BUILD
index c07112c..ada7f03 100644
--- a/dmlab2d/BUILD
+++ b/dmlab2d/BUILD
@@ -113,7 +113,7 @@ py_package(
     ],
 )
 
-VERSION = '1.0.0'  # https://semver.org
+VERSION = '1.0.0-dev.9'  # https://semver.org
 
 py_wheel(
     name = "dmlab2d_wheel",